Check valve



. Nov. 10,1925. 1,561,395

E. T. ADAMS CHECK VALVE Filed Sept. 2, 1924 INVENTOR EdwardT-filama BY M r ATTORNEYS Patented Nov. 10, 1925.

UhllTED STATES? EDWARD T HAYE'R ADAMS, OF BINQI-LAMTON, NEi/V YORK, ASSIG-NOR TO THE FAIR- 1,561,395 PATENT FFEQE...

BANKS CO1, OF NEW YORK, N. Y., A GOBPORATEQN NEW JERSEY.

CHECK VALVE.

Application filed september 2, 1924. Serial No. 735,447.

To all whom it may concern:

Be it known that I, EDWARD T. Amine,- a citizen of the United States, and a resident of Binghamton, in the county of Broome and State of New York, have invented a new and Improved Check Valve, of which the following is a full, clear, and exact description.

This invention relates to what is commonly known as check valves and particularly to straight way valves used with fluids such as liquid, gas or vapor.

The object of the invention is to provide a simplified valve which will be very effec- 16 tive and which will not readily get out of order while at the same time presenting a structure easily adjusted, repaired or in spected.

Another object of the invention is to provide a check valve wherein the parts are so arranged that the moving elements may be bodily applied and removed at any time.

A further object, more specifically, is to provide a check valve wherein a minimum interruption to the fiow is provided, the

structure being such that the valve disk or flap may be ground onto its seat at any time.

In the accompanying drawings- Figure 1 is a top-plan view of a valve, disclosing the invention, the cap being removed.

Figure 2 is a sectional view through Fig ure 1, approximately on line 2-2, the cap being shown in place.

Figure 3 is a sectional view through Figure 2, approximately on line 3-3.

Figure 4 is a fragmentary sectional view through Figure 2, approximately on line 44.

Figure 5 is an inverted view of porting ring shown in Figure 2.

Referring to the accompanying drawing by numerals, 1 indicates a casing or shell which is provided with finished hexagon pipe ends 2 and 3, the same being internally threaded and exteriorly machined or finished for giving a smooth face for a wrench and improving the appearance of the valves with the corners on the horizontal center line instead of the vertical as heretofore found in valves. This change of the ends makes the valve more convenient to display and in case the valve is placed on a platform or some suitable means of support, the same the suping a shoulder 6 whereby the ring 5 may rest thereon and be pressed tightly in position by the finished annular surface 7 of the cap '8. This cap is internally threaded and screwed onto the threaded parts of neck 3 whereby the ring 5 is place and also a tight connection is provided. Interiorly the body or shell 1 is provided with an annular enlargement 9' having a finished or ground surface 10 presenting a valve seat. From Figure 2 it will be noted that the valve seat is arranged at almost a right angle to the flow of fluid through the shell whereby there will be little resistance to the flow of the fluid while the valve member or disk 11 may be readily seated or unseated as the case may be. This valve member is preferably a round disk as shown in Figure 3, the same being slightly cupped as illustrated in Figure 2 so that the edge, which is preferably finished or machined off, will fit accurately in the seat 10. At the center, the disk 11 is provided with a square projection 12 which is adapted to receive a wrench whereby the disk 11 is held against rotation when the nut 13 is screwed against the shoulder 14. The shoulder 14 is formed on the enlargement 15, which enlargement acts as a stub shaft for receiving the outer end of the supporting arm 16, which outer end is provided with an aperture loosely accommodating the stub shaft 15. It will be noted that the kerf or slot 17 is provided in the end of the threaded extension 18 whereby the disk 11 may be rotated on its seat at any time for regrinding the same. By using a slightly offset screw driver extending through ring 5, this grinding action may take place at any time. The arm 16 at the upper end is provided with an apertured enlargement 19 which accommodates the pin 20, said pin loosely fitting in the enlargement 19 whereby the parts are comparatively loose though the parts are sufliciently snug to rigidly clamped in cause the disk 11 to properly seat itself whenever permitted to do so by the flow of fluid. The pin not only extends through the enlargement 19 but also through the apertured cars 21 and 22 projecting downwardly from the rectangular wall 23, which wall is preferably integral with one or" the arms 24 of ring 5.

From Figure 5 it will be noted that there are provided three arms 24L but it will be evident that a greater or even less number of arms could be used. The ears 21 and 22 fit loosely between the lugs or enlargements 25 and 26 extending from the neck l. Preterably, these enlargements are integral with the neck and present abutments whereby the pin 20 is automatically held in place without being upset at the ends or provided with other retaining means. lVhen the arm 16 is assembled with the ring 5, the parts are merely lowered to the position shown in Figure 2 and, consequently, the pin 20 will automatically move between the abutments 25 and 26 and be held against independent longitudinal movement though the bar 16 will be permitted a free swinging movement and the disk 11 will be permitted a free rotary movement. It will be noted that by holding the pin 20 in place as just described, considerable saving of material is made. It will also be noted that by having the surface 7 of cap 8 press the ring 5 against the shoulder 6, not only will a fluid tight con nection be secured but also the ring will be held against warping or deformation from water-hammer or other pressure shocks. When the cap 8 is removed, the arms 24: may be readily grasped by the fingers 01": the operator and all the moving parts quickly and easily removed. These parts may again be replaced at any time and when in place will automatically assume the correct position without adjustment.

What I claim is:

In a check valve, a casing having an externally threaded tubular enlargement ex tending substantially radially of the casing, a supporting or suspending ring mounted in said enlargement, and a cap having a threaded portion screwed onto said enlargement and an annular finished surface fitting against said ring near the outer edge thereof whereby a fluid-tight connection is pre sented and the ring is held against warping, said ring comprising an annular structure with a plurality of arms presenting a central spider structure, a depending wall extending from one of said arms, and apertured ears extending from said wall, said apertured ears being designed to receive a pintle pin.

EDWARD THAYER ADAMS. 

